This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A280589 #14 Nov 23 2019 04:05:24
%S A280589 1,1,1,6,24,14,240,878,1872,34560,143840,542880,4421376,27644438,
%T A280589 97250652,1666163520,10523628456,30946448412,779556556800,
%U A280589 5873176163328,15288823623792,633207380826720,6399554302310400,22325251164046200,594616643557427040,5146116019164933120
%N A280589 Sum of odd divisors of Bell(n).
%H A280589 Amiram Eldar, <a href="/A280589/b280589.txt">Table of n, a(n) for n = 0..104</a> (terms 1..70 from Vincenzo Librandi)
%F A280589 a(n) = A000593(A000110(n)).
%t A280589 a[n_]:=Select[Divisors[BellB[n]], OddQ]//Total; Table[a[n], {n, 0, 40}]
%Y A280589 Cf. A000110, A000593, A280638.
%K A280589 nonn
%O A280589 0,4
%A A280589 _Vincenzo Librandi_, Jan 07 2017
%E A280589 Offset 0 and a(0) added by _Amiram Eldar_, Nov 23 2019